TWI425174B - The Sun can generate system - Google Patents
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- TWI425174B TWI425174B TW100102704A TW100102704A TWI425174B TW I425174 B TWI425174 B TW I425174B TW 100102704 A TW100102704 A TW 100102704A TW 100102704 A TW100102704 A TW 100102704A TW I425174 B TWI425174 B TW I425174B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
- G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
- H02J2300/26—The renewable source being solar energy of photovoltaic origin involving maximum power point tracking control for photovoltaic sources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Photovoltaic Devices (AREA)
Description
本發明係關於太陽能發電系統，尤其係關於謀求因日照或溫度而變化之發電特性之電力最大點之探索之太陽能發電系統。The present invention relates to a solar power generation system, and more particularly to a solar power generation system that seeks to find the maximum point of power generation characteristics due to changes in sunlight or temperature.
近年來，以針對防止地球暖化之CO2削減之國際性組織等環保意識之提高為背景，太陽能發電系統之普及正日益擴大。該太陽能發電系統中，太陽之光能藉由太陽能面板(太陽電池)而轉換成直流電流，該直流電流利用電力調節器以各種設備可使用之方式轉換成交流電力(商用電力)。In recent years, the popularity of solar power generation systems is increasing due to the improvement of environmental awareness such as the international organization that is aiming to prevent global warming. In the solar power generation system, the solar light can be converted into a direct current by a solar panel (solar battery), and the direct current is converted into alternating current power (commercial power) by a power conditioner in a manner that can be used by various devices.
太陽能面板之特性係在日照與溫度為一定之情形中，電力相對於電壓或電流具有一個最大點，大部份成為其左側單純增加，右側單純減少之特性者。太陽能面板之上述特性因日照、溫度而變化，電力最大點之電壓或電流之值變動。中繼電力系統與面板之電力調節器藉由控制自太陽能面板輸出之發電電力之電壓或電流，而需要探索最大輸出點之功能，稱作太陽能發電之最大點追蹤(MPPT)功能。The characteristics of the solar panel are that in the case where the sunshine and the temperature are constant, the power has a maximum point with respect to the voltage or the current, and most of them have the characteristics of simply increasing the left side and simply reducing the right side. The above characteristics of the solar panel vary due to sunshine and temperature, and the value of the voltage or current at the maximum point of the power varies. The power conditioner of the relay power system and the panel needs to explore the function of the maximum output point by controlling the voltage or current of the power generated by the solar panel, which is called the maximum point tracking (MPPT) function of solar power generation.
作為先前之太陽能發電系統用電力調節器之一例，例如有專利文獻1、專利文獻2所揭示者。專利文獻1之最大點追蹤方式稱作登山法，使電壓或電流一定量地變動，此時之電力變動若於正方向則朝同一方向，相反若於負方向則朝逆方向僅一定量(一定間隔)操作電壓或電流，採取接近最大點之方式。An example of a power conditioner for a solar power generation system is disclosed in Patent Document 1 and Patent Document 2, for example. The maximum point tracking method of Patent Document 1 is called a mountaineering method, and the voltage or current is varied by a certain amount. In this case, the power fluctuation is in the same direction if it is in the positive direction, and vice versa in the reverse direction if it is in the negative direction. Interval) Operating voltage or current, taking the approach to the maximum point.
又，專利文獻2之最大點追蹤方式係獲取最大電力時之最佳動作電壓無關光之照射量而為一定，又，最佳動作電壓與溫度成比例關係，因此以換算表從溫度求得最佳動作電壓。Further, the maximum point tracking method of Patent Document 2 is that the optimum operating voltage irrespective of the amount of light when the maximum power is obtained is constant, and the optimum operating voltage is proportional to the temperature, so the maximum temperature is obtained from the conversion table. Good operating voltage.
[專利文獻1]日本特開2008-251612號公報[Patent Document 1] Japanese Patent Laid-Open Publication No. 2008-251612
[專利文獻2]日本特開2007-58845號公報[Patent Document 2] Japanese Patent Laid-Open Publication No. 2007-58845
但，根據專利文獻1所記載之方式，若探索開始點與最大點分離，且變動之操作量(間隔)較小，則到達最大點為止需要多數次操作，最大點到達時間變長。又，以縮短操作時間為目的而採取較大操作量時，會有超過最大點而操作，以最大點為中心僅重複增加與減少而未到達最大點之現象產生之虞。因此，因頻繁產生之日照之變動(雲之移動等)、噪音等之特性變化而最大點移動時，到達最大點前之試行時間中會產生面板發電量之下降。又，因一定之操作量，到達最大點附近時與真實之最大點之偏差無法避免，作為最大值產生其操作量分之偏差，此亦使發電量下降。However, according to the method described in Patent Document 1, when the search start point is separated from the maximum point and the fluctuation operation amount (interval) is small, a large number of operations are required until the maximum point is reached, and the maximum point arrival time becomes long. Further, when a large amount of operation is taken for the purpose of shortening the operation time, the operation is performed beyond the maximum point, and only the phenomenon of increasing and decreasing is repeated at the maximum point and the maximum point is not reached. Therefore, when the maximum point moves due to changes in characteristics such as frequent changes in sunshine (such as movement of clouds) and noise, the panel power generation amount decreases in the trial time before reaching the maximum point. Further, due to a certain amount of operation, the deviation from the true maximum point when reaching the maximum point cannot be avoided, and the deviation of the operation amount is caused as the maximum value, which also causes the power generation amount to decrease.
根據專利文獻2所記載之方式，使最佳動作電壓為一定，且使用換算表從溫度求得最佳動作電壓，太陽能面板之特性上實際未探索最大點，因此因頻繁產生之日照之變動(雲之移動等)、溫度之變動或噪音等之特性變化，而最大點複雜移動時無法探索最大點。According to the method described in Patent Document 2, the optimum operating voltage is made constant, and the optimum operating voltage is obtained from the temperature using the conversion table, and the maximum point is not actually found in the characteristics of the solar panel. Therefore, the fluctuation of the sunshine generated frequently occurs ( The characteristics of the movement of the cloud, etc., changes in temperature, or noise, etc., and the maximum point cannot be explored when the maximum point is complicated to move.
本發明之目的係提供一種可高速進行最大點追蹤，且可探索更正確之最大點之太陽能發電系統。It is an object of the present invention to provide a solar power generation system that can perform maximum point tracking at high speed and can find a more accurate maximum point.
為解決上述問題，本發明之太陽能發電系統，具備：太陽能面板；及電力調節器，其依循太陽能面板之特性而控制從太陽能面板輸出之發電電力之電壓或電流作為操作值，藉此探索發電電力之最大輸出點並供給於電力系統；其特徵在於：上述電力調節器具備：反相器，其將從上述太陽能面板輸出之發電電力轉換成商用電力；AVR控制部，其以變動控制從上述太陽能面板輸出之發電電力之操作值之方式，而對上述反相器輸出PWM指令；資料記憶部，其記憶利用上述變動控制之複數之操作值，與基於該操作值之來自上述太陽能面板之複數之發電電力之模式；及最大點追蹤部，其基於過去探索時之上述發電電力之模式，對過去探索時之操作值之一部份附加新操作值，而算出下次探索之操作值並供給於上述AVR控制部；藉由以上述最大點追蹤部重複探索並更新操作值，而於重複輸出之複數之發電電力之偏差變成特定值以下時，將其作為最大值。In order to solve the above problems, the solar power generation system of the present invention includes: a solar panel; and a power conditioner that controls the voltage or current of the generated power output from the solar panel as an operation value according to the characteristics of the solar panel, thereby exploring the generated power The maximum output point is supplied to the power system, and the power conditioner includes: an inverter that converts the generated power output from the solar panel into commercial power; and an AVR control unit that controls the solar energy from the fluctuation a mode of outputting the generated value of the power generated by the panel, and outputting a PWM command to the inverter; the data storage unit memorizes the operation value of the plurality of the variable control, and the plurality of solar panels from the solar panel based on the operation value a mode of generating electric power; and a maximum point tracking unit that adds a new operation value to one of the operation values at the time of the past exploration based on the mode of the above-mentioned power generation in the past exploration, and calculates the operation value of the next exploration and supplies it to The AVR control unit; repeatedly searching and updating the operation by using the maximum point tracking unit Value, and repeating a plurality of the deviation of the output power of the power generation becomes a specific value or less, as the maximum value.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部係對過去探索時之操作值之一部份，於過去探索時之複數電力之最高方向附加新操作值，而算出下次探索之複數之操作值。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit adds a new operation value to a highest direction of the plurality of powers in the past search for one of the operation values in the past search, and calculates the next search. The operational value of the plural.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部係算出3點探索之操作值，對過去探索時之操作值之2點，於複數電力之最高方向附加新的1點操作值，而算出下次探索之3點操作值。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit calculates an operation value of the three-point search, and adds a new one-point operation value to the highest direction of the complex power at two points of the operation value at the time of the past search. And calculate the 3-point operation value of the next exploration.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部係算出3點探索之操作值，對過去探索時之操作值之1點，於探索時之複數電力之最高方向附加新的2點操作值，而算出下次探索之3點操作值。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit calculates an operation value of the three-point search, and adds a new two points to the highest direction of the complex power at the time of the search for one point of the operation value at the time of the search. The operation value is used to calculate the 3-point operation value for the next exploration.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部係對過去探索時之操作值之一部份，於視為上述太陽能面板之特性之最大點之方向附加新操作值，而算出下次探索之複數之操作值。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit adds a new operation value to a direction which is regarded as a maximum point of the characteristic of the solar panel, and calculates a lower portion of the operation value at the time of the past search. The operational value of the plural of the second exploration.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部係算出3點探索之操作值，對過去探索時之操作值之2點，於視為上述太陽能面板之特性之最大點之方向附加新的1點操作值，而算出下次探索之3點操作值。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit calculates an operation value of the three-point search, and attaches two points of the operation value in the past search to the direction which is the maximum point of the characteristic of the solar panel. The new 1-point operation value is used to calculate the 3-point operation value for the next exploration.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部係算出3點探索之操作值，對過去探索時之操作值之1點，於視為上述太陽能面板之特性之最大點之方向附加新的2點操作值，而算出下次探索之3點操作值。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit calculates an operation value of the three-point search, and adds one point of the operation value at the time of the past search to the direction which is regarded as the maximum point of the characteristic of the solar panel. The new 2-point operation value is used to calculate the 3-point operation value for the next exploration.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部進而包含：收斂判定部，其在複數之發電電力之偏差成為規定值以下時判定為已收斂，使最大點探索之動作停止；及再探索開始判斷部，其根據來自收斂判定部之資訊開始動作，於複數之發電電力有變化時再次發出最大點探索指示。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit further includes: a convergence determination unit that determines that the convergence of the plurality of generated electric powers is equal to or smaller than a predetermined value, and stops the operation of the maximum point search; The re-exploration start determination unit starts the operation based on the information from the convergence determination unit, and re-issues the maximum point search instruction when the plurality of generated electric powers change.
本發明之太陽能發電系統，具備：太陽能面板；及電力調節器，其依循太陽能面板之動作特性而控制從太陽能面板輸出之發電電力之電壓或電流作為操作值，藉此探索發電電力之最大輸出點並供給於電力系統；其特徵在於：上述電力調節器具備：反相器，其將從上述太陽能面板輸出之發電電力轉換成商用電力；AVR控制部，其以於至少3點變動控制從上述太陽能面板輸出之發電電力之操作值之方式，對上述反相器輸出PWM指令；資料記憶部，其記憶利用上述變動控制之3點操作值，與基於該操作值之來自上述太陽能面板之3點發電電力之傾斜模式；及最大點追蹤部，其基於過去探索時之上述發電電力之傾斜模式，對過去探查時之操作值之一部份附加新操作值，而算出下次探索之操作值並供給於上述AVR控制部；上述最大點追蹤部在過去之發電電力為右上升模式時，將下次操作值設定於太陽能面板之動作特性之右側，在過去之發電電力為左上升模式時，將下次操作值設定於太陽能面板之動作特性之左側，在過去之發電電力為三角模式時，對該3點操作值之內側附加操作值而算出作為下次之操作值。A solar power generation system according to the present invention includes: a solar panel; and a power conditioner that controls a voltage or a current of power generated from the solar panel as an operation value in accordance with an operation characteristic of the solar panel, thereby exploring a maximum output point of the generated power Further, the power conditioner includes: an inverter that converts generated power output from the solar panel into commercial power; and an AVR control unit that controls the solar energy from at least three points a mode of outputting the generated value of the power generated by the panel, and outputting a PWM command to the inverter; the data storage unit memorizing the three-point operation value of the fluctuation control and the three-point power generation from the solar panel based on the operation value The tilt mode of the power; and the maximum point tracking unit, based on the tilt mode of the generated power during the past exploration, adding a new operation value to one of the operation values in the past exploration, and calculating the operation value of the next exploration and supplying In the AVR control unit; the maximum point tracking unit in the past generates power to the right rising mode When the next operation value is set to the right of the operating characteristic of the solar panel, when the generated power is in the left rising mode, the next operation value is set to the left of the operating characteristic of the solar panel, and the generated power is triangular in the past. In the mode, an operation value is added to the inside of the three-point operation value to calculate the next operation value.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部係在過去之發電電力為右上升模式時，增加3點操作值中之一部份而算出作為下次之操作值，在過去之發電電力為左上升模式時，減少3點操作值中之一部份而算出作為下次之操作值，在過去之發電電力為三角模式時，對3點操作值之內側附加操作值而算出作為下次之操作值。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit increases one of the three operating values when the generated electric power is in the right rising mode, and calculates the next operating value in the past. When the generated electric power is in the left-increasing mode, one of the three-point operation values is reduced to calculate the next operation value. When the generated electric power is in the triangular mode, the operation value is added to the inside of the three-point operation value. The next operation value.
本發明之太陽能發電系統，其具備：太陽能面板；及電力調節器，其依循太陽能面板之動作特性而控制從太陽能面板輸出之發電電力之電壓或電流作為操作值，藉此探索發電電力之最大輸出點並供給於電力系統；其特徵在於：上述電力調節器具備：反相器，其將從上述太陽能面板輸出之發電電力轉換成商用電力；AVR控制部，其以於至少3點變動控制從上述太陽能面板輸出之發電電力之操作值之方式，對上述反相器輸出PWM指令；資料記憶部，其記憶利用上述變動控制之複數之操作值，與基於該操作值之來自上述太陽能面板之複數之發電電力之傾斜模式；及最大點追蹤部，其基於過去探索時之上述發電電力之傾斜模式，而算出下次探索時之操作值，並供給於上述AVR控制部；上述最大點追蹤部係在過去探索時之發電電力為一方向之傾斜模式時，以設定於視為過去探索時之操作值之太陽能面板之動作特性之最大點之相反側之方式，對過去探索時之操作值之一部份附加新操作值而算出作為下次探索之操作值。A solar power generation system according to the present invention includes: a solar panel; and a power conditioner that controls a voltage or a current of power generated from the solar panel as an operation value in accordance with an operation characteristic of the solar panel, thereby exploring a maximum output of the generated power Point and supplied to the power system; wherein the power conditioner includes: an inverter that converts the generated power output from the solar panel into commercial power; and an AVR control unit that controls the at least three points from the above a method of outputting an operation value of the generated power of the solar panel, and outputting a PWM command to the inverter; the data storage unit memorizing the operation value of the plurality of the variable control, and the plurality of solar panels from the solar panel based on the operation value a tilt mode of the generated power; and a maximum point tracking unit that calculates an operation value at the time of the next search based on the tilt mode of the generated power during the past search, and supplies the value to the AVR control unit; the maximum point tracking unit is When the power generated in the past is a tilt mode in one direction, it is set to In the manner of the opposite side of the maximum point of the operational characteristics of the solar panel of the operation value in the past, a new operation value is added to one of the operational values at the time of the past exploration, and the operation value for the next exploration is calculated.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部係對過去探索時之操作值之一部份，於視為上述太陽能面板之特性之最大點之方向附加新操作值，而算出下次探索之複數之操作值。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit adds a new operation value to a direction which is regarded as a maximum point of the characteristic of the solar panel, and calculates a lower portion of the operation value at the time of the past search. The operational value of the plural of the second exploration.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部係算出3點探索之操作值，對過去探索時之操作值之2點，於視為上述太陽能面板之特性之最大點之方向附加新的1點操作值，而算出下次探索之3點操作值。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit calculates an operation value of the three-point search, and attaches two points of the operation value in the past search to the direction which is the maximum point of the characteristic of the solar panel. The new 1-point operation value is used to calculate the 3-point operation value for the next exploration.
又，如上述記載之太陽能發電系統，其中上述最大點追蹤部係算出3點探索之操作值，對過去探索時之操作值之1點，於視為上述太陽能面板之特性之最大點之方向附加新的2點操作值，而算出下次探索之3點操作值。Further, in the solar power generation system according to the above aspect, the maximum point tracking unit calculates an operation value of the three-point search, and adds one point of the operation value at the time of the past search to the direction which is regarded as the maximum point of the characteristic of the solar panel. The new 2-point operation value is used to calculate the 3-point operation value for the next exploration.
根據本發明，係記憶過去探索時之3點操作值與輸出電力，基於該資料決定下次探索時之操作值(大小及正/負方向)者。此處，設操作值之3點為P1(n)、P2(n)、P3(n)(另n係探索次數)，設其操作值(電壓)為VP1(n)、VP2(n)、VP3(n)，設其測量之電力為WP1(n)、WP2(n)、WP3(n)。並且，3點操作值之大小關係為VP1(n)≦VP2(n)≦VP3(n)According to the present invention, the three-point operation value and the output power at the time of the past exploration are memorized, and the operation value (size and positive/negative direction) at the time of the next exploration is determined based on the data. Here, it is assumed that the three points of the operation value are P1(n), P2(n), and P3(n) (the other n-system search times), and the operation values (voltage) are VP1(n), VP2(n), VP3(n), the measured power is WP1(n), WP2(n), WP3(n). Moreover, the magnitude relationship of the 3-point operation value is VP1(n)≦VP2(n)≦VP3(n)
首先，作為開始之3點P1(0)、P2(0)、P3(0)之操作值，使操作值之差異較大變動，以使電力之最大點置於較小方之操作值VP1(0)與較大方之操作值VP3(0)之間之方式設定。即，對應於中間之操作值之點P2(0)之電力WP2(0)在對應於3個操作值之電力中成為最大值。並且，將可操作範圍之操作值之最低VP1(0)與最大VP3(0)、其中間點VP2(0)作為操作值，測定各電力。First, as the starting values of the three points P1 (0), P2 (0), and P3 (0), the difference in the operating values is greatly changed, so that the maximum point of the electric power is placed in the smaller operation value VP1 ( 0) Set between the mode and the larger operation value VP3 (0). That is, the power WP2(0) corresponding to the point P2(0) of the intermediate operation value becomes the maximum value among the electric powers corresponding to the three operation values. Then, the lowest power VP1 (0) and the maximum VP3 (0) and the intermediate point VP2 (0) of the operable range are used as the operation values, and the respective electric powers are measured.
接著，將上述中間之操作值VP2(0)之點P2(0)與最大電壓之操作值VP3(0)之點P3(0)之2點重新作為P1(1)、P3(1)，於其間取新的點P2(1)。此時之新的點P2(1)之操作值成為：操作值VP2(1)=1/2*(VP2(0)+VP3(0))。然後，比較對應於新的各操作值之發電電力WP1(1)、WP2(1)、WP3(1)之大小。Next, the point P2(0) of the intermediate operation value VP2(0) and the point P3(0) of the operation value VP3(0) of the maximum voltage are again referred to as P1(1) and P3(1). Take a new point P2(1). The operation value of the new point P2(1) at this time becomes: operation value VP2(1)=1/2*(VP2(0)+VP3(0)). Then, the magnitudes of the generated powers WP1(1), WP2(1), and WP3(1) corresponding to the new respective operation values are compared.
比較之結果，當發電電力之模式包含WP1(1)<WP2(1)、WP3(1)<WP2(1)之最大點之類型3(TYP3)時，認為最大發電電力之點在P1(1)與P3(1)之間，因此以對該等點之中間點算出並附加新的點之操作值之方式縮小範圍進行。As a result of the comparison, when the mode of generating electricity includes the type 3 (TYP3) of the maximum point of WP1(1)<WP2(1), WP3(1)<WP2(1), the point of maximum power generation is considered to be P1(1) Between P3(1) and the P3(1), the range is reduced by calculating and adding the operation value of the new point to the intermediate point of the points.
又，上述比較之結果，發電電力之模式為WP1(1)>WP2(1)>WP3(1)之左上升類型2(TYP2)時，最大發電電力之點可能在P1(0)與P2(0)之間，因此將操作值VP1(0)與VP2(0)之點重新設為點P1(1)、P3(1)，於其間算出設定新的P2(1)，並測定發電電力WP2(1)。Moreover, as a result of the above comparison, when the mode of the generated power is WP1(1)>WP2(1)>WP3(1), the left rising type 2 (TYP2), the point of maximum generated power may be P1(0) and P2 ( Between 0), the points of the operation values VP1(0) and VP2(0) are reset to points P1(1) and P3(1), and a new P2(1) is calculated and the generated power WP2 is measured. (1).
如此在本發明中，基於發電電力之模式而假設最大點之位置，基於該假設為下次探索而算出操作值並檢測發電電力，因此相對於如先前之稱作登山法之使操作值以一定量變動之方式，省略中途而跳至假設之最大點之位置附近設定操作值。As described above, in the present invention, the position of the maximum point is assumed based on the mode of the generated electric power, and the operation value is calculated for the next search based on the assumption, and the generated electric power is detected, so that the operation value is constant with respect to the current so-called mountaineering method. In the manner of the amount change, the operation value is set near the position where the maximum point is assumed to be skipped in the middle.
又，前述比較之結果，當發電電力之模式為WP1(1)<WP2(1)<WP3(1)之右上升類型1(TYP1)時，變成WP1(1)=WP2(0)>WP3(0)=WP3(1)而與前次測定相矛盾。此情形時，推測產生特性變化故最大點改變，而重新測定P1(0)、P2(0)、P3(0)之電力WP1(0)、WP2(0)、WP3(0)。圖9、圖10歸納顯示以上順序者。Further, as a result of the foregoing comparison, when the mode of the generated power is WP1(1)<WP2(1)<WP3(1), the right rising type 1 (TYP1) becomes WP1(1)=WP2(0)>WP3( 0) = WP3 (1) and contradicts the previous measurement. In this case, it is presumed that the characteristic change occurs and the maximum point is changed, and the powers WP1(0), WP2(0), and WP3(0) of P1(0), P2(0), and P3(0) are newly measured. Figures 9 and 10 summarize the above sequence.
又，在發電電力之變化為特異狀況下，重新獲取過去之點，由重新獲取之新資料再次進行探索，藉此因應太陽能面板之特性變化。另，考慮因系統之影響所引起之微少變動或相對於面板其他之新操作值之應答時間，實施等待時間與複數次讀取平均化處理，以謀求評估量之穩定化。In addition, when the change in power generation is a specific situation, the past point is re-acquired, and the newly acquired data is again searched, thereby changing the characteristics of the solar panel. In addition, considering the slight fluctuation caused by the influence of the system or the response time with respect to other new operation values of the panel, the waiting time and the complex reading average processing are performed to stabilize the evaluation amount.
根據本發明，於太陽能發電系統中，可高速進行最大點追蹤，且探索更正確之最大點。According to the present invention, in a solar power generation system, maximum point tracking can be performed at high speed, and a more accurate maximum point can be explored.
以下，針對本發明之實施形態使用附圖進行說明。圖1係採用實施例之電力調節器之太陽能發電系統之構成全體圖。1表示太陽能面板，其發電特性具有圖3、圖4之特性。發電電壓與電流之關係成圖3之特性，日照變化時如縱方向之箭頭所示電流變化，周圍之溫度變化時電壓於橫箭頭所示方向變化，曲線變形。若溫度、照度不變化，則相對於電壓之電力之最大點具有1點特性。2表示本實施例之電力調節器，將面板1發電之直流電力轉換成與後述系統之交流電力系統線3同步之交流。3係一般之電力系統線，例如交流電壓200V或400V，頻率50或60Hz之線。係連接一般之用戶之負荷之線。Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a general view showing the configuration of a solar power generation system using the power conditioner of the embodiment. 1 denotes a solar panel whose power generation characteristics have the characteristics of FIGS. 3 and 4. The relationship between the generated voltage and the current is characterized by the characteristics of Fig. 3. When the sunshine changes, the current changes as indicated by the arrow in the vertical direction, and when the temperature changes around, the voltage changes in the direction indicated by the horizontal arrow, and the curve is deformed. If the temperature and illuminance do not change, the maximum point of the electric power with respect to the voltage has a 1-point characteristic. 2 shows the power conditioner of the present embodiment, and converts the DC power generated by the panel 1 into an AC synchronized with the AC power system line 3 of the system to be described later. 3 series of general power system lines, such as AC voltage 200V or 400V, frequency 50 or 60Hz line. It is the line connecting the load of the general user.
電力調節器2將太陽能面板1之直流電力轉換成與系統電壓同步之交流電力時，操作向反相器(後述)之PWM指令，將從面板1輸出之發電電力之電壓或電流作為操作值進行操作控制。具體言之，將3點面板電壓(操作值)供給於反相器，藉由基於各操作值之3點發電電力之變化模式，按照後述之規則決定下一面板電壓(操作值)，探索最大電力點。When the power conditioner 2 converts the DC power of the solar panel 1 into AC power synchronized with the system voltage, the PWM command to the inverter (described later) is operated, and the voltage or current of the generated power output from the panel 1 is used as an operation value. Operational control. Specifically, the three-point panel voltage (operating value) is supplied to the inverter, and the next panel voltage (operation value) is determined according to the rule described later by the change pattern of the three-point generated power based on each operation value, and the maximum value is searched. Power point.
圖5係顯示發電特性上之3點發電電力之變化模式。將黑圓P1~P3之右上升模式作為類型1(視為最大點在電力較大之右側)，將白圓P1~P3之左上升模式(視為最大點在電力較小之左側)作為類型2，將白三角P1~P3之三角模式(最大點在P1~P3間)作為類型3。可知各模式於三角模式3含最大點，3點發電電力值之偏差變小。該偏差進入規定值內時判斷為到達最大點，記憶該電力繼續輸出該發電電力時，可將最大電力供給於反相器。Fig. 5 is a graph showing a change pattern of power generation power at three points in power generation characteristics. The right rising mode of the black circle P1~P3 is taken as type 1 (as the maximum point is on the right side of the larger power), and the left rising mode of the white circle P1~P3 is regarded as the type where the maximum point is on the left side of the smaller power. 2. The triangle mode of the white triangle P1~P3 (the maximum point is between P1 and P3) is taken as type 3. It can be seen that each mode has a maximum point in the triangular mode 3, and the variation in the power value of the three-point power generation becomes small. When the deviation enters the predetermined value, it is determined that the maximum point is reached, and when the electric power is continuously output, the maximum electric power can be supplied to the inverter.
其後，定期測定發電電力，比較測定值與前述記憶之最大電力值，監視電力值之變化(上下)上特性之變化，前述記憶值與測定值之差異超過規定值時，判斷特性發生變化，重新設定3點操作值中兩側之點P1與P3之操作值(中間點P2保持原樣)，以新3點為起點再次進行最大點探索，進行以新最大點之電力輸出。如此相對於隨著1日中太陽光之照度或溫度之變化之最大點之移動(特性變化)，重複探索最大輸出點。Thereafter, the generated electric power is periodically measured, and the measured value and the maximum stored electric power value are compared, and the change in the characteristic (upper and lower) of the electric power value is monitored. When the difference between the stored value and the measured value exceeds a predetermined value, the characteristic is changed. The operation values of the points P1 and P3 on both sides of the 3-point operation value are reset (the intermediate point P2 remains as it is), and the maximum point search is performed again with the new 3 points as the starting point, and the power output at the new maximum point is performed. The maximum output point is repeatedly searched for with respect to the movement (characteristic change) of the maximum point with the change of the illuminance or temperature of the sunlight in the first day.
圖2係電力調節器2內之方塊構成圖。4係將以太陽能面板1發電之直流電力轉換成與系統電壓同步之交流電力(商用電力)之反相器，5係以變動控制從面板1輸出之發電電力之電壓或電流之3點操作值之方式，對上述反相器4供給PWM信號之AVR控制部(Automatic Voltage Regulator：自動電壓調整器)。自太陽能面板1之發電電力供給於反相器4，且作為太陽能面板1之輸出控制用之資訊，以電力與電壓之形式收入電力調節器2內。電力調節器2從所收入之電力資訊按照後述理論決定下次探索用操作值(設定電壓)，對AVR控制部5發送指令。2 is a block diagram of the power conditioner 2. In the fourth system, the DC power generated by the solar panel 1 is converted into an inverter of AC power (commercial power) synchronized with the system voltage, and the 5-stage operation value of the voltage or current of the power generated by the panel 1 is controlled by fluctuation. In this manner, an AVR control unit (Automatic Voltage Regulator) that supplies a PWM signal to the inverter 4 is provided. The generated electric power from the solar panel 1 is supplied to the inverter 4, and is used as information for output control of the solar panel 1, and is received in the power conditioner 2 in the form of electric power and voltage. The power conditioner 2 determines the next search operation value (set voltage) from the generated power information in accordance with the theory described later, and transmits an instruction to the AVR control unit 5.
6係記憶利用上述變動控制之3點操作值，與基於該操作值之自太陽能面板1之3點發電電力之模式之資料記憶部。具體言之，將所讀取之發電電力資料與操作值配對，進而組合表示3點電力變化模式之類型(TYP)符號，於資料記憶部6作為3點資料6a記憶，如圖8所示每次探索記憶此次與前次之資料。即，探索次數i中將此次i之操作值VP、發電電力WP及類型(TYP)與前次i-1之類型(TYPM1)作為資料而記憶。The 6-series memory uses the three-point operation value of the above-described fluctuation control and the data storage unit of the mode of generating electric power from the three points of the solar panel 1 based on the operation value. Specifically, the read generated power data is paired with the operation value, and the type (TYP) symbol indicating the 3-point power change mode is combined and stored in the data storage unit 6 as the 3-point data 6a, as shown in FIG. Explore the memory and the previous information. In other words, in the number of times of exploration i, the operation value VP, the generated power WP, and the type (TYP) of the current i and the type (TYPM1) of the previous i-1 are stored as data.
7係基於前次(過去)與此次(過去)之探索時之發電電力之模式，對此次或前次探索時之3點操作值之一部份(2點)附加新的1點操作值，以運算部7a算出下次探索用之3點操作值(設定電壓)，供給於上述AVR控制部5之最大點追蹤部。最大點追蹤部7上，以演算法記憶有圖9所示之最大點探索規則與圖10所示之操作值之算出處理順序，基於該等規則與順序於運算部7a內進行下次探索之新操作值之算出。AVR控制部5將上述3點操作值(設定電壓)與自太陽能面板1之發電電壓進行比較，以接近操作值(設定電壓)之方式將PWM指令向反相器4輸出，使太陽能面板1之發電電壓為操作值(設定電壓)。The 7 series is based on the mode of power generation during the previous (past) and this (past) exploration, and a new 1 point operation is added to one of the 3 point operation values (2 points) of the previous or previous exploration. The calculation unit 7a calculates the three-point operation value (set voltage) for the next search, and supplies it to the maximum point tracking unit of the AVR control unit 5. In the maximum point tracking unit 7, the calculation procedure of the maximum point search rule shown in FIG. 9 and the operation value shown in FIG. 10 is stored in the algorithm, and the next search is performed in the calculation unit 7a based on the rules and the order. The calculation of the new operation value. The AVR control unit 5 compares the three-point operation value (set voltage) with the power generation voltage from the solar panel 1, and outputs the PWM command to the inverter 4 so as to approach the operation value (set voltage), thereby causing the solar panel 1 to The generated voltage is the operating value (set voltage).
從面板1發出之發電電力藉由反相器之開關等以較快週期微小變動，僅瞬時值會成錯誤判斷，因此以電力平均化部10進行平均化處理。8係3點發電電力資料之偏差成規定值以下時判定為收斂，使最大點追蹤部7之動作停止，結束最大點追蹤之收斂判定部。又，收斂判定部8接著週期性觀測最大點之電力，監視電力變化。The generated electric power generated from the panel 1 is slightly changed by a switch of the inverter or the like in a relatively fast cycle, and only the instantaneous value is erroneously determined. Therefore, the power averaging unit 10 performs averaging processing. When the deviation of the eight-point three-point power generation electric power data is equal to or smaller than the predetermined value, it is determined that the convergence is made, the operation of the maximum point tracking unit 7 is stopped, and the convergence determination unit of the maximum point tracking is ended. Further, the convergence determination unit 8 periodically observes the power of the maximum point and monitors the power change.
9係接收自收斂判定部8之電力變化之觀測資訊，有變化時發出再探索指示之再探索開始判斷部。再探索指示向最大點追蹤部7發送，開始最大電力點之探索。最大點追蹤部7將下一探索方向與距離(操作值、電壓)決定為3點操作值，按照該決定對AVR控制部與資料記憶部6輸出3點操作值。The 9th is a re-exploration start determination unit that receives the observation information of the power change from the convergence determination unit 8 and issues a re-exploration instruction when there is a change. The re-exploration instruction is transmitted to the maximum point tracking unit 7, and the search for the maximum power point is started. The maximum point tracking unit 7 determines the next search direction and distance (operation value, voltage) as a three-point operation value, and outputs a three-point operation value to the AVR control unit and the data storage unit 6 in accordance with the determination.
以下，使用圖6、圖7之最大點追蹤步驟與圖11之動作流程，以太陽能面板1之代表性發電特性為基礎，就探索動作進行說明。首先作為規定初期之3點電壓之一例，將所設定之探索電壓範圍之上限之操作值VP3之對應點P3、下限之操作值VP1之對應點P1、其中間之操作值VP2之對應點P2規定為初始值(圖11，步驟102)。從最大點追蹤部7將上述各操作值VP1、VP2、VP3之電壓資料依次向AVR控制部5輸出，測定對應於各操作值之電力(圖11，步驟103)。所對應之電力如圖6(1)所示，分別變成WP1(W1)、WP2(W2)、WP3(W3)，發電電力之偏差在特定值以上未收斂(圖11，步驟104)。Hereinafter, the search operation will be described based on the representative power generation characteristics of the solar panel 1 using the maximum point tracking step of FIGS. 6 and 7 and the operation flow of FIG. First, as an example of the initial three-point voltage, the corresponding point P3 of the operation value VP3 of the upper limit of the set search voltage range, the corresponding point P1 of the operation value VP1 of the lower limit, and the corresponding point P2 of the operation value VP2 therebetween are defined. It is the initial value (Fig. 11, step 102). The voltage data of each of the above-described operation values VP1, VP2, and VP3 is sequentially output from the maximum point tracking unit 7 to the AVR control unit 5, and the electric power corresponding to each operation value is measured (FIG. 11, step 103). As shown in Fig. 6 (1), the corresponding electric power becomes WP1 (W1), WP2 (W2), and WP3 (W3), and the variation of the generated electric power does not converge above a specific value (Fig. 11, step 104).
此處所測定之電力成為W1<W2、W2>W3、W1>W3，因此圖9中與「此次類型(TYP)3(圖11，步驟105)相當，算出「中心探索左半面處理」(圖11，步驟111)之操作值，其結果成圖6(2)之狀態(圖11，步驟112)。Since the electric power measured here is W1 < W2, W2 > W3, and W1 > W3, the "central exploration left half processing" is calculated in Fig. 9 in accordance with "this type (TYP) 3 (Fig. 11, step 105)" (Fig. 11. The operational value of step 111), the result of which is the state of Fig. 6 (2) (Fig. 11, step 112).
此處之「中心探索左半面處理」如圖10(A)所示，點P1、P3使用前次者，重新算出對應於點P2之操作值(電壓)並附加於點P1、P3之間。具體言之，操作值VP2=(VP1(i-1)+VP2(i-1))/2。即，以使新的點P2位於前次之點P1、P3之中央位置之方式算出並附加操作值VP2。Here, as shown in FIG. 10(A), the points P1 and P3 use the previous one, and the operation value (voltage) corresponding to the point P2 is newly calculated and added between the points P1 and P3. Specifically, the operation value VP2 = (VP1(i-1) + VP2(i-1))/2. That is, the operation value VP2 is calculated and added so that the new point P2 is located at the center position of the previous points P1 and P3.
上述電力測定結果(圖11，步驟113)在前次為TYP3，此次變成TYP1(圖11，步驟105)，因此由圖9算出「反面中心探索」之操作值(圖11，步驟106、109)，決定右半面之3點(圖11，步驟112)而成為圖6(3)之狀態。此處之「反面中心探索」處理如圖10(B)所示，點P1、P3使用前前次者，重新算出對應於點P2之操作值(電壓)，並附加於前前次之點P1、P3之間。具體言之，操作值VP2=(VP2(i-2)+VP3(i-2))/2。即，以使新的點P2位於前前次之點P1、P3之中央位置之方式，算出並附加操作值VP2。The power measurement result (FIG. 11, step 113) is TYP3 in the previous time, and this time becomes TYP1 (FIG. 11, step 105). Therefore, the operation value of "reverse surface center search" is calculated from FIG. 9 (FIG. 11, steps 106, 109). The three points on the right half (Fig. 11, step 112) are determined to be in the state of Fig. 6 (3). Here, the "reverse surface center exploration" process is as shown in Fig. 10(B). The points P1 and P3 are used before and after the operation, and the operation value (voltage) corresponding to the point P2 is recalculated and added to the previous point P1. Between P3. Specifically, the operation value VP2 = (VP2(i-2) + VP3(i-2))/2. In other words, the operation value VP2 is calculated and added so that the new point P2 is located at the center of the previous points P1 and P3.
該測定電力成為TYP2，由圖9算出「減少探索(左擴大)」之操作值(圖11，步驟106、109、112)(圖10(E))，變成圖6(4)之狀態。此處之電力成為TYP3，測定電力為W2>W3、W1<W3，因此由圖9算出「中心探索右半面(右半面探查)」之操作值(圖10(C))，變成圖6(5)之狀態。該狀態再次變成TYP3，因此由圖9算出「(中心探索左半面)左半面探索」之操作值(圖10(D))，變成左半面之3點而成為圖6(6)之狀態。The measured electric power is TYP2, and the operation value (FIG. 11, steps 106, 109, and 112) (FIG. 10 (E)) of "reduction search (left expansion)" is calculated from FIG. 9 and becomes the state of FIG. 6 (4). Here, the electric power is TYP3, and the measured electric power is W2>W3 and W1<W3. Therefore, the operation value of the "central exploration right half (right half probe)" is calculated from Fig. 9 (Fig. 10(C)), and becomes Fig. 6 (5). The state of ). Since this state is again changed to TYP3, the operation value of "the left half of the center searched left half" is calculated from Fig. 9 (Fig. 10(D)), and becomes the state of Fig. 6 (6) at three points on the left half.
該狀態再次變成TYP3，由圖9算出「中心探索右半面(右半面探索)」之操作值(圖10(C))，變成右半面之3點而成為圖6(7)之狀態。該狀態再次變成TYP3，但3點之電力差低於規定(圖11，步驟104)，因此判斷到達最大點，而停止繼續探索，且變成電力變化監視狀態(圖11，步驟114)。在此狀態下，以最終探索時之3點操作值(VP1~VP3)將中間之操作值(VP2)之發電電力作為太陽能面板1之最大電力，並供給於電力調節器2。This state is again changed to TYP3, and the operation value of "central exploration right half (right half exploration)" is calculated from Fig. 9 (Fig. 10(C)), and becomes the state of Fig. 6 (7) at three points on the right half. This state is again changed to TYP3, but the power difference between the three points is lower than the predetermined value (FIG. 11, step 104). Therefore, it is judged that the maximum point is reached, and the continuous search is stopped, and the power change monitoring state is reached (FIG. 11, step 114). In this state, the generated electric power of the intermediate operation value (VP2) is used as the maximum electric power of the solar panel 1 at the three-point operation value (VP1 to VP3) at the time of the final search, and is supplied to the electric power conditioner 2.
上述探索動作如圖6(2)~(7)所示，在太陽能面板1之發電電力之特性上以較大幅度交互重複左右之反面之探索，藉此在短時間內縮小最大點之範圍，檢測可特定最大點之範圍之TYP3之發電電力後，於發電電力之特性上以較小幅度重複左右之反面之探索，藉此可在短時間內特定最大點附近。此相對於如先前之稱作登山法之使操作值以一定量變動之探索方式，可省略探索步驟之中途步驟，因此可大幅縮短最大點特定之探索時間。又，在發電電力之特性上交互重複左右之反面之探索，藉此而特定最大點附近，因此可提高最大點之精度。As shown in FIGS. 6(2) to (7), the above-described search operation repeats the exploration of the reverse side of the right and left sides in a large-scale interaction of the characteristics of the power generation power of the solar panel 1, thereby narrowing the range of the maximum point in a short time. After detecting the power generation of the TYP3 in the range of the specific maximum point, the exploration of the reverse side of the left and right is repeated with a small amplitude on the characteristics of the generated power, whereby the vicinity of the maximum point can be specified in a short time. This can be omitted from the search method in which the operation value is changed by a certain amount as previously referred to as the mountaineering method, so that the search time in the maximum point can be significantly shortened. Further, in the characteristics of the generated electric power, the exploration of the opposite sides of the left and right is repeated, and the vicinity of the maximum point is specified, so that the accuracy of the maximum point can be improved.
其後，由日照變化等特性從圖7(1)之虛線向實線之方式變化時，檢測電力變化(圖11，步驟114)，在擴大P1與P3之位置(擴大使P1之電壓為-5V，使P3之電壓為+5V)上(圖11，步驟116)，重新測定3點之所有電力(圖11，步驟103)。Thereafter, when the characteristics such as changes in sunshine change are changed from the broken line in FIG. 7(1) to the solid line, the power change is detected (FIG. 11, step 114), and the positions of P1 and P3 are enlarged (the voltage of P1 is expanded to - 5V, the voltage of P3 is +5V) (Fig. 11, step 116), and all power of 3 points is re-measured (Fig. 11, step 103).
其結果判斷為TYP1(圖9中此次TYP1)(圖11，步驟105)，作為增加探索從現狀之點P3大幅擴大寬度，對僅上升2*(Vp3-Vp2)之電壓算出附加新的點P3之操作值(圖10(F))，其結果變成圖7(2)之狀態。其結果變成TYP3，因此基於圖9進行操作中心探索左半面(圖10(A))，從而變成圖7(3)之狀態。由於係前次TYP3、此次TYP1，因此基於圖9變成反面中心探索(圖10(B))，於右半面成圖7(4)之狀態。以下，重複Typ3之圖7(5)、圖7(6)之左右之反面之探索，到達圖7(7)之狀態後，各發電電力之偏差變成規定值內，停止探索並變成電力變化監視狀態(圖11，步驟114)。此狀態下，以最終探索時之3點操作值(VP1~VP3)，將中間之操作值(VP2)之發電電力作為太陽能面板1之最大電力，供給於電力調節器2。As a result, it is judged that TYP1 (this time TYP1 in FIG. 9) (FIG. 11, step 105), and the width is greatly expanded as the point of increase P3 is increased, and a new point is calculated for the voltage of only 2* (Vp3-Vp2). The operation value of P3 (Fig. 10(F)), the result becomes the state of Fig. 7 (2). As a result, TYP3 is obtained. Therefore, the left half of the operation center is searched based on FIG. 9 (FIG. 10(A)), and the state of FIG. 7 (3) is obtained. Since the previous TYP3 and the current TYP1 are based on Fig. 9, the reverse center is explored (Fig. 10(B)), and the right half is in the state of Fig. 7(4). In the following, the search for the reverse side of the left and right sides of Fig. 7 (5) and Fig. 7 (6) of Typ3 is repeated, and after the state of Fig. 7 (7) is reached, the variation of each generated electric power becomes a predetermined value, and the search is stopped and the electric power change monitoring is stopped. State (Figure 11, step 114). In this state, the power generated by the intermediate operation value (VP2) is supplied to the power conditioner 2 as the maximum power of the solar panel 1 at the three-point operation value (VP1 to VP3) at the time of the final search.
1．．．太陽能面板1. . . Solar panel
2．．．電力調節器2. . . Power conditioner
3．．．電力系統3. . . Power Systems
4．．．反相器4. . . inverter
5．．．AVR控制部5. . . AVR Control Department
6．．．資料記憶部6. . . Data memory department
7．．．最大點追蹤部7. . . Maximum point tracking
8．．．收斂判定部8. . . Convergence determination unit
9．．．再探索開始判斷部9. . . Explore the beginning of the judgment department
10．．．電力平均化部10. . . Electric power averaging department
圖1係太陽能發電系統之概要構成圖。Fig. 1 is a schematic configuration diagram of a solar power generation system.
圖2係本發明之實施例之電力調節器之方塊構成圖。Fig. 2 is a block diagram showing the configuration of a power conditioner according to an embodiment of the present invention.
圖3係太陽能面板發電之電壓與電流之特性說明圖。Fig. 3 is a diagram showing the characteristics of voltage and current generated by solar panel power generation.
圖4係太陽能面板之發電電力之特性圖。Fig. 4 is a characteristic diagram of power generation of a solar panel.
圖5係太陽能面板之發電電力之模式與最大點追蹤之說明圖。Fig. 5 is an explanatory diagram of mode and maximum point tracking of power generation by solar panels.
圖6(1)-(7)係本發明實施例之最大點追蹤步驟之說明圖。6(1)-(7) are explanatory diagrams of the maximum point tracking step of the embodiment of the present invention.
圖7(1)-(7)係相同太陽能面板之特性變化之情形之最大點追蹤步驟之說明圖。Fig. 7 (1) - (7) are explanatory diagrams of the maximum point tracking step in the case where the characteristics of the same solar panel are changed.
圖8係相同資料記憶部之資料構成說明圖。Fig. 8 is an explanatory diagram of the data composition of the same data storage unit.
圖9係相同最大點探索規則之說明圖。Figure 9 is an explanatory diagram of the same maximum point search rule.
圖10(A)-(F)係相同操作值之算出處理順序之說明圖。Fig. 10 (A) - (F) are explanatory views of the processing procedure for calculating the same operation value.
圖11係本發明實施例之動作流程圖。Figure 11 is a flow chart showing the operation of the embodiment of the present invention.
1‧‧‧太陽能面板1‧‧‧ solar panels
2‧‧‧電力調節器2‧‧‧Power Regulator
3‧‧‧電力系統3‧‧‧Power system
4‧‧‧反相器4‧‧‧Inverter
5‧‧‧AVR控制部5‧‧‧AVR Control Department
6‧‧‧資料記憶部6‧‧‧Data Memory Department
6a‧‧‧3點資料6a‧‧3 points
7‧‧‧最大點追蹤部7‧‧‧Maximum tracking department
7a‧‧‧運算部7a‧‧‧Department of Operations
8‧‧‧收斂判定部8‧‧‧Convergence Judgment Department
9‧‧‧再探索開始判斷部9‧‧‧Exploring the beginning of the judgment department
10‧‧‧電力平均化部10‧‧‧Power Averaging Department
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| KR100757320B1 (en) * | 2006-05-09 | 2007-09-11 | 창원대학교 산학협력단 | The control apparatus and method of senseless mppt control for photovoltaic power generation system |
| CA2655007C (en) * | 2009-02-20 | 2017-06-27 | Queen's University At Kingston | Photovoltaic cell inverter |
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- 2010-12-20 WO PCT/JP2010/072882 patent/WO2011102051A1/en active Application Filing
- 2010-12-20 CN CN201080064058.2A patent/CN102763052B/en not_active Expired - Fee Related
- 2010-12-20 US US13/579,056 patent/US9310822B2/en not_active Expired - Fee Related
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| TW567298B (en) * | 2003-01-29 | 2003-12-21 | Jin-Huang Pan | Solar energy tracking electricity accumulating system and method |
| JP2004280220A (en) * | 2003-03-13 | 2004-10-07 | Tama Tlo Kk | Solar power generation system and maximum power point follow-up control method |
| JP2005073321A (en) * | 2003-08-28 | 2005-03-17 | Tokyo Univ Of Agriculture & Technology | Constant-voltage control system at short circuit current transfer time of inverter for solar power generation |
| TWI232361B (en) * | 2003-11-25 | 2005-05-11 | Delta Electronics Inc | Maximum-power tracking method and device of solar power generation system |
| JP2007058845A (en) * | 2005-07-27 | 2007-03-08 | Gunma Prefecture | Photovoltaic power generator |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102763052B (en) | 2014-10-22 |
| JP5357803B2 (en) | 2013-12-04 |
| US20130046416A1 (en) | 2013-02-21 |
| CN102763052A (en) | 2012-10-31 |
| JP2011171348A (en) | 2011-09-01 |
| US9310822B2 (en) | 2016-04-12 |
| WO2011102051A1 (en) | 2011-08-25 |
| TW201144723A (en) | 2011-12-16 |
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